Compact Board Connector Layout Using Axial Terminal Extension

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Solution Overview

Problem

Existing connectors, such as those described in JP-A No. 2018-92844, require overlapping configurations in the radial direction to connect, which limits the achievement of a more compact configuration in the connection axis intersection direction.

Innovation Solution

The proposed connector configuration includes an inner terminal with a connection portion connected to an inner conductor, and an outer terminal with a terminal-side covering portion and an extension portion that covers the connection portion, along with a dielectric body to support the inner terminal. This configuration allows the connection section to be covered by the counterparty connector and the terminal-side extension portion, eliminating the need for overlapping arrangements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the outer terminal and counterparty connector are arranged to overlap in the radial direction to cover the connection section, then the connection section is protected and covered, but the connector configuration becomes less compact in the connection axis intersection direction

Engineering Contradiction:

Improvecoverage of connection sectionVSAvoidcompactness in connection axis intersection direction

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The patent transitions from a radial overlap arrangement to an axial extension arrangement. The terminal-side extension portion extends along the connection axis direction rather than overlapping radially, covering the connection section through dimensional repositioning. This resolves the contradiction by maintaining coverage functionality while eliminating radial overlap, achieving compactness in the connection axis intersection direction.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The outer terminal is segmented into distinct functional portions: the terminal-side covering portion and the terminal-side extension portion. This segmentation allows each portion to perform its specific function independently - the covering portion provides radial coverage while the extension portion provides axial coverage of the connection section, eliminating the need for overlapping arrangements.

Inventive Principle:

Principle #1Segmentation

2Reliability

If the connection portion protrudes outward to be covered by the counterparty connector, then the connection section is covered, but the outer terminal structure becomes more complex

Engineering Contradiction:

Improvecoverage of connection sectionVSAvoidouter terminal structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the covering function and the extension function into a single integrated outer terminal structure. The terminal-side extension portion is formed as an integral part of the outer terminal, combining multiple functions (structural support, connection section coverage, and alignment) into one component, thereby reducing overall device complexity while maintaining coverage reliability.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12347958B2Electrical connector with inner and out terminals with a compact configuration and connector set using the same

Publication Date: 2025.07.01 IRISO ELECTRONICS CO LTD

AI summary

A board connector including an inner terminal including a connection portion for connecting to an inner conductor, an outer terminal, and a terminal unit-side dielectric body. The outer terminal includes a terminal-side covering portion covering the inner terminal in a state in which the connection portion protrudes outward, and a terminal-side extension portion extending from the terminal-side covering portion and extending alongside the connection portion. The terminal unit-side dielectric body is provided between the inner terminal and the outer terminal at an inside of the terminal-side covering portion so as to support the inner terminal.